Advanced

Space-time considerations in the phase locking of high harmonics

Gaarde, Mette LU and Schafer, Kenneth LU (2002) In Physical Review Letters 89(21).
Abstract
The combination of several high order harmonics can produce an attosecond pulse train, provided that the harmonics are locked in phase to each other. We present calculations that evaluate the degree of phase locking that is achieved in argon and neon gases interacting with an intense, 50 fs laser pulse, for a range of macroscopic conditions. We find that phase locking depends on both the temporal and the spatial phase behavior of the harmonics, as determined by the interplay between the intrinsic dipole phase and the phase matching in the nonlinear medium. We show that, as a consequence of this, it is not possible to compensate for a lack of phase locking by purely temporal phase manipulation.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
89
issue
21
publisher
American Physical Society
external identifiers
  • wos:000179068000019
  • scopus:0037132198
ISSN
1079-7114
DOI
10.1103/PhysRevLett.89.213901
language
English
LU publication?
yes
id
9642d913-b2f2-43fd-8ddf-dc8612fe51b4 (old id 909598)
date added to LUP
2008-01-22 08:57:59
date last changed
2017-12-03 03:22:54
@article{9642d913-b2f2-43fd-8ddf-dc8612fe51b4,
  abstract     = {The combination of several high order harmonics can produce an attosecond pulse train, provided that the harmonics are locked in phase to each other. We present calculations that evaluate the degree of phase locking that is achieved in argon and neon gases interacting with an intense, 50 fs laser pulse, for a range of macroscopic conditions. We find that phase locking depends on both the temporal and the spatial phase behavior of the harmonics, as determined by the interplay between the intrinsic dipole phase and the phase matching in the nonlinear medium. We show that, as a consequence of this, it is not possible to compensate for a lack of phase locking by purely temporal phase manipulation.},
  author       = {Gaarde, Mette and Schafer, Kenneth},
  issn         = {1079-7114},
  language     = {eng},
  number       = {21},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Space-time considerations in the phase locking of high harmonics},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.89.213901},
  volume       = {89},
  year         = {2002},
}